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Commit3cff2bb

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add js solution for maxProfit IV
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‎problems/0188.买卖股票的最佳时机IV.md

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@@ -230,6 +230,31 @@ class Solution:
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Javascript:
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```javascript
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constmaxProfit= (k,prices)=> {
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if (prices==null||prices.length<2|| k==0) {
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return0;
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}
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let dp=Array.from(Array(prices.length), ()=>Array(2*k+1).fill(0));
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for (let j=1; j<2* k; j+=2) {
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dp[0][j]=0- prices[0];
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}
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for(let i=1; i<prices.length; i++) {
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for (let j=0; j<2* k; j+=2) {
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dp[i][j+1]=Math.max(dp[i-1][j+1], dp[i-1][j]- prices[i]);
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dp[i][j+2]=Math.max(dp[i-1][j+2], dp[i-1][j+1]+ prices[i]);
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}
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}
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return dp[prices.length-1][2* k];
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};
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```
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